The new Cascadia day cab is equipped with a Cummins Westport ISX12N Near-Zero NOx natural gas engine and Eaton Fuller Advantage Series automated manual transmission, which, when combined with the model’s aerodynamic design, can result in fuel-efficiency gains of up to 3% compared with similarly spec’d original Cascadia CNG truck models, according to the Portland, Ore.-based truck maker.

“By partnering with companies like UPS to pilot innovations such as the new Cascadia CNG truck, we can continuously evaluate and enhance our products,” Kelly Gedert, director of product marketing for Freightliner Trucks and Detroit Components, said in a statement.